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/**
* \file include/seqmid.h
* \brief Application interface library for the ALSA driver
* \author Jaroslav Kysela <perex@perex.cz>
* \author Abramo Bagnara <abramo@alsa-project.org>
* \author Takashi Iwai <tiwai@suse.de>
* \date 1998-2001
*
* Application interface library for the ALSA driver
*/
/*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef __ALSA_SEQMID_H
#define __ALSA_SEQMID_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* \defgroup SeqMiddle Sequencer Middle Level Interface
* Sequencer Middle Level Interface
* \ingroup Sequencer
* \{
*/
/**
* \brief initialize event record
* \param ev event record pointer
*
* This macro clears the given event record pointer to the default status.
*/
#define snd_seq_ev_clear(ev) \
memset(ev, 0, sizeof(snd_seq_event_t))
/**
* \brief set the tag for given event
* \param ev event record
* \param t event tag
*
* This macro sets the tag to the given event record.
*/
#define snd_seq_ev_set_tag(ev,t) \
((ev)->tag = (t))
/**
* \brief set the explicit destination
* \param ev event record
* \param c destination client id
* \param p destination port id
*
* This macro sets the client and port id numbers to the given event record.
*
* \sa snd_seq_ev_set_subs()
*/
#define snd_seq_ev_set_dest(ev,c,p) \
((ev)->dest.client = (c), (ev)->dest.port = (p))
/**
* \brief set broadcasting to subscribers
* \param ev event record
*
* This macro sets the destination as the subscribers.
*
* \sa snd_seq_ev_set_dest()
*/
#define snd_seq_ev_set_subs(ev) \
((ev)->dest.client = SND_SEQ_ADDRESS_SUBSCRIBERS,\
(ev)->dest.port = SND_SEQ_ADDRESS_UNKNOWN)
/**
* \brief set broadcasting to all clients/ports
* \param ev event record
*
* This macro sets the destination as the broadcasting.
*
* \sa snd_seq_ev_set_dest()
*/
#define snd_seq_ev_set_broadcast(ev) \
((ev)->dest.client = SND_SEQ_ADDRESS_BROADCAST,\
(ev)->dest.port = SND_SEQ_ADDRESS_BROADCAST)
/**
* \brief set the source port
* \param ev event record
* \param p source port id
*
* This macro sets the source port id number.
*/
#define snd_seq_ev_set_source(ev,p) \
((ev)->source.port = (p))
/**
* \brief set direct passing mode (without queued)
* \param ev event instance
*
* This macro sets the event to the direct passing mode
* to be delivered immediately without queueing.
*
* \sa snd_seq_ev_schedule_tick(), snd_seq_ev_schedule_real()
*/
#define snd_seq_ev_set_direct(ev) \
((ev)->queue = SND_SEQ_QUEUE_DIRECT)
/**
* \brief set tick-scheduling mode on queue
* \param ev event instance
* \param q queue id to schedule
* \param relative relative time-stamp if non-zero
* \param ttick tick time-stamp to be delivered
*
* This macro sets the scheduling of the event in the
* MIDI tick mode.
*
* \sa snd_seq_ev_schedule_real(), snd_seq_ev_set_direct()
*/
#define snd_seq_ev_schedule_tick(ev, q, relative, ttick) \
((ev)->flags &= ~(SND_SEQ_TIME_STAMP_MASK | SND_SEQ_TIME_MODE_MASK),\
(ev)->flags |= SND_SEQ_TIME_STAMP_TICK,\
(ev)->flags |= (relative) ? SND_SEQ_TIME_MODE_REL : SND_SEQ_TIME_MODE_ABS,\
(ev)->time.tick = (ttick),\
(ev)->queue = (q))
/**
* \brief set real-time-scheduling mode on queue
* \param ev event instance
* \param q queue id to schedule
* \param relative relative time-stamp if non-zero
* \param rtime time-stamp to be delivered
*
* This macro sets the scheduling of the event in the
* realtime mode.
*
* \sa snd_seq_ev_schedule_tick(), snd_seq_ev_set_direct()
*/
#define snd_seq_ev_schedule_real(ev, q, relative, rtime) \
((ev)->flags &= ~(SND_SEQ_TIME_STAMP_MASK | SND_SEQ_TIME_MODE_MASK),\
(ev)->flags |= SND_SEQ_TIME_STAMP_REAL,\
(ev)->flags |= (relative) ? SND_SEQ_TIME_MODE_REL : SND_SEQ_TIME_MODE_ABS,\
(ev)->time.time = *(rtime),\
(ev)->queue = (q))
/**
* \brief set event priority
* \param ev event instance
* \param high_prior 1 for high priority mode
*/
#define snd_seq_ev_set_priority(ev, high_prior) \
((ev)->flags &= ~SND_SEQ_PRIORITY_MASK,\
(ev)->flags |= (high_prior) ? SND_SEQ_PRIORITY_HIGH : SND_SEQ_PRIORITY_NORMAL)
/**
* \brief set fixed data
* \param ev event instance
*
* Sets the event length mode as fixed size.
*
* \sa snd_seq_ev_set_variable(), snd_seq_ev_set_varusr()
*/
#define snd_seq_ev_set_fixed(ev) \
((ev)->flags &= ~SND_SEQ_EVENT_LENGTH_MASK,\
(ev)->flags |= SND_SEQ_EVENT_LENGTH_FIXED)
/**
* \brief set variable data
* \param ev event instance
* \param datalen length of the external data
* \param dataptr pointer of the external data
*
* Sets the event length mode as variable length and stores the data.
*
* \sa snd_seq_ev_set_fixed(), snd_seq_ev_set_varusr()
*/
#define snd_seq_ev_set_variable(ev, datalen, dataptr) \
((ev)->flags &= ~SND_SEQ_EVENT_LENGTH_MASK,\
(ev)->flags |= SND_SEQ_EVENT_LENGTH_VARIABLE,\
(ev)->data.ext.len = (datalen),\
(ev)->data.ext.ptr = (dataptr))
/**
* \brief set varusr data
* \param ev event instance
* \param datalen length of the external data
* \param dataptr pointer of the external data
*
* Sets the event length mode as variable user-space data and stores the data.
*
* \sa snd_seq_ev_set_fixed(), snd_seq_ev_set_variable()
*/
#define snd_seq_ev_set_varusr(ev, datalen, dataptr) \
((ev)->flags &= ~SND_SEQ_EVENT_LENGTH_MASK,\
(ev)->flags |= SND_SEQ_EVENT_LENGTH_VARUSR,\
(ev)->data.ext.len = (datalen),\
(ev)->data.ext.ptr = (dataptr))
/**
* \brief set queue controls
* \param ev event record
* \param typ event type
* \param q queue id
* \param val control value
*/
#define snd_seq_ev_set_queue_control(ev, typ, q, val) \
((ev)->type = (typ),\
snd_seq_ev_set_dest(ev, SND_SEQ_CLIENT_SYSTEM, SND_SEQ_PORT_SYSTEM_TIMER),\
(ev)->data.queue.queue = (q),\
(ev)->data.queue.param.value = (val))
/**
* \brief set the start queue event
* \param ev event record
* \param q queue id to start
*
* \sa snd_seq_ev_set_queue_stop(), snd_seq_ev_set_queue_continue()
*/
#define snd_seq_ev_set_queue_start(ev, q) \
snd_seq_ev_set_queue_control(ev, SND_SEQ_EVENT_START, q, 0)
/**
* \brief set the stop queue event
* \param ev event record
* \param q queue id to stop
*
* \sa snd_seq_ev_set_queue_start(), snd_seq_ev_set_queue_continue()
*/
#define snd_seq_ev_set_queue_stop(ev, q) \
snd_seq_ev_set_queue_control(ev, SND_SEQ_EVENT_STOP, q, 0)
/**
* \brief set the stop queue event
* \param ev event record
* \param q queue id to continue
*
* \sa snd_seq_ev_set_queue_start(), snd_seq_ev_set_queue_stop()
*/
#define snd_seq_ev_set_queue_continue(ev, q) \
snd_seq_ev_set_queue_control(ev, SND_SEQ_EVENT_CONTINUE, q, 0)
/**
* \brief set the stop queue event
* \param ev event record
* \param q queue id to change tempo
* \param val the new tempo value
*/
#define snd_seq_ev_set_queue_tempo(ev, q, val) \
snd_seq_ev_set_queue_control(ev, SND_SEQ_EVENT_TEMPO, q, val)
/**
* \brief set the real-time position of a queue
* \param ev event record
* \param q queue id to change tempo
* \param rtime the new real-time pointer
*/
#define snd_seq_ev_set_queue_pos_real(ev, q, rtime) \
((ev)->type = SND_SEQ_EVENT_SETPOS_TIME,\
snd_seq_ev_set_dest(ev, SND_SEQ_CLIENT_SYSTEM, SND_SEQ_PORT_SYSTEM_TIMER),\
(ev)->data.queue.queue = (q),\
(ev)->data.queue.param.time.time = *(rtime))
/**
* \brief set the tick-time position of a queue
* \param ev event record
* \param q queue id to change tempo
* \param ttime the new tick-time
*/
#define snd_seq_ev_set_queue_pos_tick(ev, q, ttime) \
((ev)->type = SND_SEQ_EVENT_SETPOS_TICK,\
snd_seq_ev_set_dest(ev, SND_SEQ_CLIENT_SYSTEM, SND_SEQ_PORT_SYSTEM_TIMER),\
(ev)->data.queue.queue = (q),\
(ev)->data.queue.param.time.tick = (ttime))
/* set and send a queue control event */
int snd_seq_control_queue(snd_seq_t *seq, int q, int type, int value, snd_seq_event_t *ev);
/**
* \brief start the specified queue
* \param seq sequencer handle
* \param q queue id to start
* \param ev optional event record (see #snd_seq_control_queue)
*/
#define snd_seq_start_queue(seq, q, ev) \
snd_seq_control_queue(seq, q, SND_SEQ_EVENT_START, 0, ev)
/**
* \brief stop the specified queue
* \param seq sequencer handle
* \param q queue id to stop
* \param ev optional event record (see #snd_seq_control_queue)
*/
#define snd_seq_stop_queue(seq, q, ev) \
snd_seq_control_queue(seq, q, SND_SEQ_EVENT_STOP, 0, ev)
/**
* \brief continue the specified queue
* \param seq sequencer handle
* \param q queue id to continue
* \param ev optional event record (see #snd_seq_control_queue)
*/
#define snd_seq_continue_queue(seq, q, ev) \
snd_seq_control_queue(seq, q, SND_SEQ_EVENT_CONTINUE, 0, ev)
/**
* \brief change the tempo of the specified queue
* \param seq sequencer handle
* \param q queue id
* \param tempo the new tempo value
* \param ev optional event record (see #snd_seq_control_queue)
*/
#define snd_seq_change_queue_tempo(seq, q, tempo, ev) \
snd_seq_control_queue(seq, q, SND_SEQ_EVENT_TEMPO, tempo, ev)
/* create a port - simple version - return the port number */
int snd_seq_create_simple_port(snd_seq_t *seq, const char *name,
unsigned int caps, unsigned int type);
/* delete the port */
int snd_seq_delete_simple_port(snd_seq_t *seq, int port);
/* simple subscription between this port and another port
(w/o exclusive & time conversion)
*/
int snd_seq_connect_from(snd_seq_t *seq, int my_port, int src_client, int src_port);
int snd_seq_connect_to(snd_seq_t *seq, int my_port, int dest_client, int dest_port);
int snd_seq_disconnect_from(snd_seq_t *seq, int my_port, int src_client, int src_port);
int snd_seq_disconnect_to(snd_seq_t *seq, int my_port, int dest_client, int dest_port);
/*
* set client information
*/
int snd_seq_set_client_name(snd_seq_t *seq, const char *name);
int snd_seq_set_client_event_filter(snd_seq_t *seq, int event_type);
int snd_seq_set_client_pool_output(snd_seq_t *seq, size_t size);
int snd_seq_set_client_pool_output_room(snd_seq_t *seq, size_t size);
int snd_seq_set_client_pool_input(snd_seq_t *seq, size_t size);
/* sync output queue */
int snd_seq_sync_output_queue(snd_seq_t *seq);
/*
* parse the given string and get the sequencer address
*/
int snd_seq_parse_address(snd_seq_t *seq, snd_seq_addr_t *addr, const char *str);
/*
* reset client input/output pool
*/
int snd_seq_reset_pool_output(snd_seq_t *seq);
int snd_seq_reset_pool_input(snd_seq_t *seq);
/**
* \brief set note event
* \param ev event record
* \param ch channel number
* \param key note key
* \param vel velocity
* \param dur duration (in tick or msec)
*/
#define snd_seq_ev_set_note(ev, ch, key, vel, dur) \
((ev)->type = SND_SEQ_EVENT_NOTE,\
snd_seq_ev_set_fixed(ev),\
(ev)->data.note.channel = (ch),\
(ev)->data.note.note = (key),\
(ev)->data.note.velocity = (vel),\
(ev)->data.note.duration = (dur))
/**
* \brief set note-on event
* \param ev event record
* \param ch channel number
* \param key note key
* \param vel velocity
*/
#define snd_seq_ev_set_noteon(ev, ch, key, vel) \
((ev)->type = SND_SEQ_EVENT_NOTEON,\
snd_seq_ev_set_fixed(ev),\
(ev)->data.note.channel = (ch),\
(ev)->data.note.note = (key),\
(ev)->data.note.velocity = (vel))
/**
* \brief set note-off event
* \param ev event record
* \param ch channel number
* \param key note key
* \param vel velocity
*/
#define snd_seq_ev_set_noteoff(ev, ch, key, vel) \
((ev)->type = SND_SEQ_EVENT_NOTEOFF,\
snd_seq_ev_set_fixed(ev),\
(ev)->data.note.channel = (ch),\
(ev)->data.note.note = (key),\
(ev)->data.note.velocity = (vel))
/**
* \brief set key-pressure event
* \param ev event record
* \param ch channel number
* \param key note key
* \param vel velocity
*/
#define snd_seq_ev_set_keypress(ev,ch,key,vel) \
((ev)->type = SND_SEQ_EVENT_KEYPRESS,\
snd_seq_ev_set_fixed(ev),\
(ev)->data.note.channel = (ch),\
(ev)->data.note.note = (key),\
(ev)->data.note.velocity = (vel))
/**
* \brief set MIDI controller event
* \param ev event record
* \param ch channel number
* \param cc controller number
* \param val control value
*/
#define snd_seq_ev_set_controller(ev,ch,cc,val) \
((ev)->type = SND_SEQ_EVENT_CONTROLLER,\
snd_seq_ev_set_fixed(ev),\
(ev)->data.control.channel = (ch),\
(ev)->data.control.param = (cc),\
(ev)->data.control.value = (val))
/**
* \brief set program change event
* \param ev event record
* \param ch channel number
* \param val program number
*/
#define snd_seq_ev_set_pgmchange(ev,ch,val) \
((ev)->type = SND_SEQ_EVENT_PGMCHANGE,\
snd_seq_ev_set_fixed(ev),\
(ev)->data.control.channel = (ch),\
(ev)->data.control.value = (val))
/**
* \brief set pitch-bend event
* \param ev event record
* \param ch channel number
* \param val pitch bend; zero centered from -8192 to 8191
*/
#define snd_seq_ev_set_pitchbend(ev,ch,val) \
((ev)->type = SND_SEQ_EVENT_PITCHBEND,\
snd_seq_ev_set_fixed(ev),\
(ev)->data.control.channel = (ch),\
(ev)->data.control.value = (val))
/**
* \brief set channel pressure event
* \param ev event record
* \param ch channel number
* \param val channel pressure value
*/
#define snd_seq_ev_set_chanpress(ev,ch,val) \
((ev)->type = SND_SEQ_EVENT_CHANPRESS,\
snd_seq_ev_set_fixed(ev),\
(ev)->data.control.channel = (ch),\
(ev)->data.control.value = (val))
/**
* \brief set sysex event
* \param ev event record
* \param datalen length of sysex data
* \param dataptr sysex data pointer
*
* the sysex data must contain the start byte 0xf0 and the end byte 0xf7.
*/
#define snd_seq_ev_set_sysex(ev,datalen,dataptr) \
((ev)->type = SND_SEQ_EVENT_SYSEX,\
snd_seq_ev_set_variable(ev, datalen, dataptr))
/** \} */
#ifdef __cplusplus
}
#endif
#endif /* __ALSA_SEQMID_H */